| BW Advisory Ltd | Administrative & support | 2023 |
| Bwcatering Ltd | Hospitality | 2026 |
| Byde Management Limited | Hospitality | 2023 |
| Byphone Ltd | Information & communication | 2014 |
| C J DIX Plumbing Ltd | Energy | 2012 |
| C M Carpentry & Building Limited | Construction | 2025 |
| C-Elect Associates Ltd | Construction | 2005 |
| C-Elect Holdings Ltd | Construction | 2022 |
| C. Jenner & SON Limited | Professional & scientific | 1934 |
| C.H Tennis Ltd | Arts & recreation | 2024 |
| C.S Trading Solutions Ltd | Financial services | 2025 |
| C.Scott Building Ltd | Construction | 2020 |
| CA Marche Media Limited | Information & communication | 2020 |
| Cabco Folkestone Ltd | Transport & logistics | 2025 |
| Cabco Folkestone Taxi Ltd | Transport & logistics | 2025 |
| Cafe AMI Ltd | Hospitality | 2025 |
| Cafe Morena Ltd | Hospitality | 2023 |
| Cafe Solstice Ltd | Hospitality | 2024 |
| CAFE24 Hythe Ltd | Real estate | 2020 |
| Caffe LA Delizia Limited | Hospitality | 2009 |
| Cake Box Folkestone Ltd | Wholesale & retail | 2017 |
| Cakeshop Media Limited | Professional & scientific | 2024 |
| Cameron Venues Ltd | Arts & recreation | 2025 |
| Campaign Champions Ltd | Professional & scientific | 2025 |
| Campbell's Heating & Plumbing Services Limited | Construction | 2019 |
| Camper Build Solutions Limited | Wholesale & retail | 2021 |
| Canawood Products Limited | Transport & logistics | 2015 |
| Candy's Ice Cream Limited | Manufacturing | 2026 |
| Candystripe Co Ltd | Wholesale & retail | 2026 |
| Canhawan Ltd | Information & communication | 2024 |
| Cannon and Company Accountants Limited | Professional & scientific | 2011 |
| Canterbury City Football Club CIC | Arts & recreation | 2007 |
| Canterbury Hope Foundation Ltd | Health & social care | 2022 |
| Canterbury Tails Trading Limited | Wholesale & retail | 2021 |
| Capel Consultancy Services Ltd | Professional & scientific | 2023 |
| Capel Groundworks Limited | Construction | 2013 |
| Capel Partners Limited | Professional & scientific | 2018 |
| Capel Property Partners Limited | Hospitality | 2022 |
| Capel-Le-Ferne Preschool | Education | 2010 |
| Cappadocia BBQ Meze Grill Ltd | Hospitality | 2026 |
| Capricorn Property Services Ltd | Real estate | 2017 |
| Captain Harbour Ltd | Hospitality | 2023 |
| Car-Go-Flix Limited | Transport & logistics | 2012 |
| Care Anchor Kent CIC | Health & social care | 2024 |
| Cargo Security Group Limited | Administrative & support | 2021 |
| Carlo DI Blasi Studio Ltd | Information & communication | 2022 |
| Carlsbergers Ltd | Hospitality | 2025 |
| Carly Baker Limited | Information & communication | 2011 |
| Carne Property Investments Ltd | Real estate | 2020 |
| Carpathia Market Limited | Wholesale & retail | 2026 |
| Carrie Anne Aesthetics Ltd | Other services | 2023 |
| Cars Group Ltd | Wholesale & retail | 2022 |
| Casco Philatelic Services Limited | Extraterritorial | 2017 |
| Castle Belmont Limited | Extraterritorial | 2002 |
| Castle Hill Court (Folkstone) Limited | Households | 1995 |
| Castle Hill Property Limited | Real estate | 2018 |
| Castle Hill Village Nursery Community Interest Company | Education | 2006 |
| Castle Mews (Folkestone) Limited | Administrative & support | 2014 |
| Castle Properties (Folkestone) Limited | Construction | 1974 |
| Castlewood Hotels Holding Limited | Hospitality | 2018 |
| Castlewood Hotels Limited | Real estate | 2010 |
| Catalyst Consultants Europe (UK) Limited | Professional & scientific | 2012 |
| Caterdirect Ltd | Wholesale & retail | 2023 |
| Cavanagh Lyminge Limited | Wholesale & retail | 1995 |
| Cavell's Mediterranean Lounge Ltd | Hospitality | 2024 |
| Cawley's Roofing and Building Ltd | Construction | 2025 |
| Caxton House Ltd | Other services | 2012 |
| Caymis Limited | Households | 2024 |
| CCS Boiler Services Limited | Construction | 2003 |
| CDM Technologies Ltd | Wholesale & retail | 2023 |
| Cedar’S Wings CIC | Health & social care | 2025 |
| Cefas Productions Limited | Information & communication | 2006 |
| Cekin Ltd | Wholesale & retail | 2017 |
| Celebrity INK Autographs Limited | Wholesale & retail | 2013 |
| Cellfix Limited | Manufacturing | 2014 |
| Censum Limited | Professional & scientific | 2025 |
| Central 98B Ltd | Hospitality | 2022 |
| Central Engineering Design Limited | Manufacturing | 2002 |
| Central Folkestone Fish Bar Ltd | Hospitality | 2023 |
| Central Pharmacy Folkestone Ltd | Wholesale & retail | 2012 |
| Centre for Associative Economics Limited | Information & communication | 2000 |
| Centre Healthcare Ltd | Professional & scientific | 2008 |
| Centrefold Properties Limited | Construction | 1990 |
| Centremax Limited | Other services | 2003 |
| Centuries Multi Services Limited | Construction | 2024 |
| Ceylinco Consolidated UK Limited | Real estate | 2018 |
| Cftarco Limited | Real estate | 2024 |
| Cgrkent Limited | Construction | 2025 |
| Champion & Bushell (Holdings) Limited | Professional & scientific | 2003 |
| Champion & Bushell Limited | Construction | 1971 |
| Chandos Premier Ltd | Hospitality | 2016 |
| Channel Business Centre Ltd | Real estate | 2026 |
| Channel Business Services Ltd | Administrative & support | 2006 |
| Channel Electrical Ltd | Manufacturing | 2017 |
| Channel Exports Limited | | 1963 |
| Channel Housing Limited | Real estate | 2005 |
| Channel Recruitment Ltd | Administrative & support | 2022 |
| Channel Storage Limited | Transport & logistics | 2024 |
| Channel Supported Housing | Health & social care | 2007 |
| Channel Uniforms Ltd | Wholesale & retail | 2012 |